Metamorphic Rocks

Dr. Ahmad Redaa

2024-10-28

What is Metamorphism?

Agents of Metamorphism

Difference Between Pressure and Stress

Pressure (Lithostatic Pressure)

Stress (Directed or Differential Stress)

Source: https://opengeology.org

Types of Metamorphism

Source: https://www.msnucleus.org

Contact Metamorphism

Definition

Key Characteristics

Common Rocks and Minerals

Marble

Source: https://openpress.usask.ca

Quartzite

Source: https://openpress.usask.ca

Hornfels

Source: https://openpress.usask.ca

Regional Metamorphism

Definition

Key Characteristics

Metamorphic Grade

Source: https://www.geologyin.com/

Metamorphic Textures

Source: https://www.zmescience.com/

Hydrothermal Processes

Definition

Key Characteristics

Example Rocks Formed

Factors Influencing Hydrothermal Processes

  1. Fluid composition: Controls the minerals formed.
  2. Temperature: Hotter fluids lead to more intense metamorphism.
  3. Host rock type: Determines the resulting mineralogical changes.
  4. Permeability: Allows fluids to penetrate and alter rocks.

Summary